OK. Now let's define the situation a little further.
Do you have PTSD?
Do you have access to the latest experimental mind altering drugs being tested for use on PTSD patients ?
After a life of never owning any guns, did you just suddenly buy 2 pistols, a shotgun, a rifle, 6000 rounds of ammo, and enough chemical mixtures to launch a satellite into space?
Did you call a shooting range to schedule a session, and they turned you down ?
Do you have what sounds like a drunk JOKER from BATMAN for the message on your phone?
Did you just drop out of a college PHD program ?
Did you just die your hair red ?
Are you unemployed and living off your tuition loan?
Do you have a girlfriend/wife? (well, we know that answer).
Have you sent emails to your friends asking them if they will visit you in prison ?
If you can say NO to all of these, I'm pretty sure you are not the problem.
How are any of these things illegal ?
And where, pray tell, would a grad student get PTSD ??
You sir, are using a Retrospectroscope, the world’s only infallible instrument.
And also, pray tell, of these “chemical mixtures”. While details are scant, it’s simple enough to make explosives out of everyday household chemicals.
In short, the only way to have put the picture together would be to have a Big Brother-level ubiquitous surveillance system.
And even THAT would have a hard time catching someone who simply just went nuts. . .